Three state select circuit for use in a data processing system or the like
CA 1255808 A · Owner: International Business Machines Corporation · Inventors: Buscaglia, Carl U.; Knepper, Lawrence E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved cascode current switch circuit particularly adopted for use in a data system or the like. The circuit receives a binary output or an, inhibit output under the control of a select/deselect input. The circuit includes interconnected upper and lower current switch circuits and is characterized by power reduction circuit means interconnecting the upper and lower current switches.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.